Rich Mogull of Securosis.com just completed a sponsored report called the Executive Guide to DLP, including a video series (3 clips).  You can check it out here: http://www.websense.com/welcome/MiscLandings/exec_DLP/exec_DLP.html
Description: Reported data breaches increased by nearly 50 percent in 2008 and industry and regulatory requirements are continually being added to stem the tide of data leaks. Data [...]